Revamped the project through enhancing stored procedure error handling, boosting code readability, and unifying functions across multiple brands. Conducted stress tests simulating high traffic conditions (10,000 requests/sec) to assess system performance and scalability. Established unit and integration tests, and integrated these testing mechanisms into the CI/CD process. Implemented the CI/CD workflow, resulting in a 5% improvement in team efficiency. Developed a side project that enabled efficient testing of functionalities, driving a 10% improvement in team efficiency.

Built a web application for collecting visitor behavior data for clients and recording user behavior with Google Analytics and Google Adwords Resolved a system error and enhanced data collection efficiency by 10% Provided technical support to ad optimizers and the sales department, including setting up product catalogs and tracking ad performance.